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30571156040 = 2353539215959
BaseRepresentation
bin11100011110001011…
…101101001001001000
32220220120000122011112
4130132023231021020
51000102203443130
622013313545452
72131403352545
oct343613551110
986816018145
1030571156040
1111a68691017
125b12275288
132b62801c59
1416a0243bcc
15bddd4a495
hex71e2ed248

30571156040 has 32 divisors (see below), whose sum is σ = 68804856000. Its totient is φ = 12224950464.

The previous prime is 30571156039. The next prime is 30571156043. The reversal of 30571156040 is 4065117503.

It is a junction number, because it is equal to n+sod(n) for n = 30571155988 and 30571156006.

It is not an unprimeable number, because it can be changed into a prime (30571156043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33581 + ... + 249539.

It is an arithmetic number, because the mean of its divisors is an integer number (2150151750).

Almost surely, 230571156040 is an apocalyptic number.

It is an amenable number.

30571156040 is an abundant number, since it is smaller than the sum of its proper divisors (38233699960).

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

30571156040 is a wasteful number, since it uses less digits than its factorization.

30571156040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219509 (or 219505 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The spelling of 30571156040 in words is "thirty billion, five hundred seventy-one million, one hundred fifty-six thousand, forty".

Divisors: 1 2 4 5 8 10 20 40 3539 7078 14156 17695 28312 35390 70780 141560 215959 431918 863836 1079795 1727672 2159590 4319180 8638360 764278901 1528557802 3057115604 3821394505 6114231208 7642789010 15285578020 30571156040