29687490 has 48 divisors (see below), whose sum is σ = 88216128. Its totient is φ = 6785568.

The previous prime is 29687477. The next prime is 29687509. The reversal of 29687490 is 9478692.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22932 + ... + 24191.

It is an arithmetic number, because the mean of its divisors is an integer number (1837836).

Almost surely, 2^29687490 is an apocalyptic number.

29687490 is an abundant number, since it is smaller than the sum of its proper divisors (58528638).

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

29687490 is a wasteful number, since it uses less digits than its factorization.

29687490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47143 (or 47140 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 29687490 is about 5448.6227617628. The cubic root of 29687490 is about 309.6405476409.

The spelling of 29687490 in words is "twenty-nine million, six hundred eighty-seven thousand, four hundred ninety".