29920572 has 36 divisors (see below), whose sum is σ = 82509336. Its totient is φ = 9066720.

The previous prime is 29920571. The next prime is 29920613. The reversal of 29920572 is 27502992.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29920571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37383 + ... + 38174.

It is an arithmetic number, because the mean of its divisors is an integer number (2291926).

Almost surely, 2^29920572 is an apocalyptic number.

29920572 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

29920572 is an abundant number, since it is smaller than the sum of its proper divisors (52588764).

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

29920572 is a wasteful number, since it uses less digits than its factorization.

29920572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75578 (or 75573 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 29920572 is about 5469.9700181994. The cubic root of 29920572 is about 310.4487846012.

The spelling of 29920572 in words is "twenty-nine million, nine hundred twenty thousand, five hundred seventy-two".