29865980 has 12 divisors (see below), whose sum is σ = 62718600. Its totient is φ = 11946384.

The previous prime is 29865961. The next prime is 29866033. The reversal of 29865980 is 8956892.

It is a super-2 number, since 2×29865980² = 1783953522720800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746630 + ... + 746669.

It is an arithmetic number, because the mean of its divisors is an integer number (5226550).

Almost surely, 2^29865980 is an apocalyptic number.

29865980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29865980 is an abundant number, since it is smaller than the sum of its proper divisors (32852620).

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

29865980 is a wasteful number, since it uses less digits than its factorization.

29865980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493308 (or 1493306 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 29865980 is about 5464.9775845835. The cubic root of 29865980 is about 310.2598584214.

The spelling of 29865980 in words is "twenty-nine million, eight hundred sixty-five thousand, nine hundred eighty".