29720490 has 64 divisors (see below), whose sum is σ = 74293632. Its totient is φ = 7603200.

The previous prime is 29720477. The next prime is 29720507. The reversal of 29720490 is 9402792.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89625 + ... + 89955.

It is an arithmetic number, because the mean of its divisors is an integer number (1160838).

Almost surely, 2^29720490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29720490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37146816).

29720490 is an abundant number, since it is smaller than the sum of its proper divisors (44573142).

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

29720490 is a wasteful number, since it uses less digits than its factorization.

29720490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 29720490 is about 5451.6502088817. The cubic root of 29720490 is about 309.7552351666.

The spelling of 29720490 in words is "twenty-nine million, seven hundred twenty thousand, four hundred ninety".