40747428 has 24 divisors (see below), whose sum is σ = 105641760. Its totient is φ = 13582440.

The previous prime is 40747417. The next prime is 40747459. The reversal of 40747428 is 82474704.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 40747392 and 40747401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188538 + ... + 188753.

It is an arithmetic number, because the mean of its divisors is an integer number (4401740).

Almost surely, 2^40747428 is an apocalyptic number.

It is an amenable number.

40747428 is an abundant number, since it is smaller than the sum of its proper divisors (64894332).

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

40747428 is a wasteful number, since it uses less digits than its factorization.

40747428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377304 (or 377296 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 40747428 is about 6383.3712096352. The cubic root of 40747428 is about 344.1121974927.

The spelling of 40747428 in words is "forty million, seven hundred forty-seven thousand, four hundred twenty-eight".