29020431 has 16 divisors (see below), whose sum is σ = 42634368. Its totient is φ = 17412000.

The previous prime is 29020427. The next prime is 29020451. The reversal of 29020431 is 13402092.

It is not a de Polignac number, because 29020431 - 2² = 29020427 is a prime.

It is a super-2 number, since 2×29020431² = 1684370830851522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 29020398 and 29020407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29020451) 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, 1021 + ... + 7686.

It is an arithmetic number, because the mean of its divisors is an integer number (2664648).

Almost surely, 2^29020431 is an apocalyptic number.

29020431 is a deficient number, since it is larger than the sum of its proper divisors (13613937).

29020431 is a wasteful number, since it uses less digits than its factorization.

29020431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8822.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 29020431 is about 5387.0614438671. The cubic root of 29020431 is about 307.3038156374.

The spelling of 29020431 in words is "twenty-nine million, twenty thousand, four hundred thirty-one".