29490531 has 16 divisors (see below), whose sum is σ = 46892544. Its totient is φ = 16118784.

The previous prime is 29490523. The next prime is 29490541. The reversal of 29490531 is 13509492.

It is not a de Polignac number, because 29490531 - 2³ = 29490523 is a prime.

It is a super-2 number, since 2×29490531² = 1739382837323922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 29490492 and 29490501.

It is not an unprimeable number, because it can be changed into a prime (29490541) 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, 30046 + ... + 31011.

It is an arithmetic number, because the mean of its divisors is an integer number (2930784).

Almost surely, 2^29490531 is an apocalyptic number.

29490531 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

29490531 is a deficient number, since it is larger than the sum of its proper divisors (17402013).

29490531 is a wasteful number, since it uses less digits than its factorization.

29490531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61090.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 29490531 is about 5430.5184835336. The cubic root of 29490531 is about 308.9542668568.

The spelling of 29490531 in words is "twenty-nine million, four hundred ninety thousand, five hundred thirty-one".