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19193030 = 2531101613
BaseRepresentation
bin100100100110…
…1110011000110
31100010002212222
41021031303012
514403134110
61523212342
7322065233
oct111156306
940102788
1019193030
11a91a00a
1265170b2
133c9002c
14279878a
151a41c55
hex124dcc6

19193030 has 32 divisors (see below), whose sum is σ = 36073728. Its totient is φ = 7344000.

The previous prime is 19192997. The next prime is 19193039. The reversal of 19193030 is 3039191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19193039) 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, 31004 + ... + 31616.

It is an arithmetic number, because the mean of its divisors is an integer number (1127304).

Almost surely, 219193030 is an apocalyptic number.

19193030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19193030 is a deficient number, since it is larger than the sum of its proper divisors (16880698).

19193030 is a wasteful number, since it uses less digits than its factorization.

19193030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752.

The product of its (nonzero) digits is 729, while the sum is 26.

The square root of 19193030 is about 4380.9850490500. The cubic root of 19193030 is about 267.7407736968.

The spelling of 19193030 in words is "nineteen million, one hundred ninety-three thousand, thirty".

Divisors: 1 2 5 10 31 62 101 155 202 310 505 613 1010 1226 3065 3131 6130 6262 15655 19003 31310 38006 61913 95015 123826 190030 309565 619130 1919303 3838606 9596515 19193030