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30637072 = 241914817
BaseRepresentation
bin111010011011…
…1110000010000
32010122112011101
41310313300100
530320341242
63012354144
7521260624
oct164676020
963575141
1030637072
11163260a4
12a315954
136468c5b
1440d7184
152a529b7
hex1d37c10

30637072 has 10 divisors (see below), whose sum is σ = 59359358. Its totient is φ = 15318528.

The previous prime is 30637051. The next prime is 30637097. The reversal of 30637072 is 27073603.

It can be written as a sum of positive squares in only one way, i.e., 21492496 + 9144576 = 4636^2 + 3024^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30637072.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 957393 + ... + 957424.

Almost surely, 230637072 is an apocalyptic number.

It is an amenable number.

30637072 is a deficient number, since it is larger than the sum of its proper divisors (28722286).

30637072 is a wasteful number, since it uses less digits than its factorization.

30637072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914825 (or 1914819 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 30637072 is about 5535.0765125696. The cubic root of 30637072 is about 312.9073412300.

The spelling of 30637072 in words is "thirty million, six hundred thirty-seven thousand, seventy-two".