40729800 has 48 divisors (see below), whose sum is σ = 126264240. Its totient is φ = 10861120.

The previous prime is 40729783. The next prime is 40729813. The reversal of 40729800 is 892704.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33342 + ... + 34541.

It is an arithmetic number, because the mean of its divisors is an integer number (2630505).

Almost surely, 2^40729800 is an apocalyptic number.

40729800 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40729800 is an abundant number, since it is smaller than the sum of its proper divisors (85534440).

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

40729800 is a wasteful number, since it uses less digits than its factorization.

40729800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67902 (or 67893 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 40729800 is about 6381.9902851697. The cubic root of 40729800 is about 344.0625674909.

The spelling of 40729800 in words is "forty million, seven hundred twenty-nine thousand, eight hundred".