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188030769400 = 23522087450481
BaseRepresentation
bin1010111100011110000…
…0011101100011111000
3122222100012001202211101
42233013200131203320
511040041334110100
6222214035541144
716404402111655
oct2570740354370
9588305052741
10188030769400
117281a516091
123053715a7b4
131496766b8c6
14915a5d2c2c
154d5778086a
hex2bc781d8f8

188030769400 has 48 divisors (see below), whose sum is σ = 437381983440. Its totient is φ = 75176102400.

The previous prime is 188030769391. The next prime is 188030769401. The reversal of 188030769400 is 4967030881.

It is a happy number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188030769401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192160 + ... + 642640.

It is an arithmetic number, because the mean of its divisors is an integer number (9112124655).

Almost surely, 2188030769400 is an apocalyptic number.

188030769400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188030769400 is an abundant number, since it is smaller than the sum of its proper divisors (249351214040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

188030769400 is a wasteful number, since it uses less digits than its factorization.

188030769400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452584 (or 452575 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 188030769400 in words is "one hundred eighty-eight billion, thirty million, seven hundred sixty-nine thousand, four hundred".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 200 2087 4174 8348 10435 16696 20870 41740 52175 83480 104350 208700 417400 450481 900962 1801924 2252405 3603848 4504810 9009620 11262025 18019240 22524050 45048100 90096200 940153847 1880307694 3760615388 4700769235 7521230776 9401538470 18803076940 23503846175 37606153880 47007692350 94015384700 188030769400