30147655 has 16 divisors (see below), whose sum is σ = 37914624. Its totient is φ = 22983840.

The previous prime is 30147653. The next prime is 30147659. The reversal of 30147655 is 55674103.

It is not a de Polignac number, because 30147655 - 2¹ = 30147653 is a prime.

It is a super-2 number, since 2×30147655² = 1817762203998050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30147653) 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, 8934 + ... + 11836.

It is an arithmetic number, because the mean of its divisors is an integer number (2369664).

Almost surely, 2^30147655 is an apocalyptic number.

30147655 is a deficient number, since it is larger than the sum of its proper divisors (7766969).

30147655 is a wasteful number, since it uses less digits than its factorization.

30147655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3006.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 30147655 is about 5490.6880261038. The cubic root of 30147655 is about 311.2321925480.

The spelling of 30147655 in words is "thirty million, one hundred forty-seven thousand, six hundred fifty-five".