45729020 has 24 divisors (see below), whose sum is σ = 96276768. Its totient is φ = 18244800.

The previous prime is 45729011. The next prime is 45729023. The reversal of 45729020 is 2092754.

It is a super-2 number, since 2×45729020² = 4182286540320800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45729023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5705 + ... + 11135.

It is an arithmetic number, because the mean of its divisors is an integer number (4011532).

Almost surely, 2^45729020 is an apocalyptic number.

It is an amenable number.

45729020 is an abundant number, since it is smaller than the sum of its proper divisors (50547748).

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

45729020 is a wasteful number, since it uses less digits than its factorization.

45729020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5861 (or 5859 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 45729020 is about 6762.3235651660. The cubic root of 45729020 is about 357.5998254165.

The spelling of 45729020 in words is "forty-five million, seven hundred twenty-nine thousand, twenty".