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38120890 = 25231071549
BaseRepresentation
bin1001000101101…
…0110110111010
32122201202000211
42101122312322
534224332030
63441021334
7642010423
oct221326672
978652024
1038120890
111a577875
121092484a
137b89452
1450c464a
15353012a
hex245adba

38120890 has 32 divisors (see below), whose sum is σ = 72316800. Its totient is φ = 14439744.

The previous prime is 38120881. The next prime is 38120891. The reversal of 38120890 is 9802183.

It is not an unprimeable number, because it can be changed into a prime (38120891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23836 + ... + 25384.

It is an arithmetic number, because the mean of its divisors is an integer number (2259900).

Almost surely, 238120890 is an apocalyptic number.

38120890 is a deficient number, since it is larger than the sum of its proper divisors (34195910).

38120890 is a wasteful number, since it uses less digits than its factorization.

38120890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 38120890 is about 6174.2116905723. The cubic root of 38120890 is about 336.5536801306.

The spelling of 38120890 in words is "thirty-eight million, one hundred twenty thousand, eight hundred ninety".

Divisors: 1 2 5 10 23 46 107 115 214 230 535 1070 1549 2461 3098 4922 7745 12305 15490 24610 35627 71254 165743 178135 331486 356270 828715 1657430 3812089 7624178 19060445 38120890