40920128 has 28 divisors (see below), whose sum is σ = 84734400. Its totient is φ = 19569792.

The previous prime is 40920107. The next prime is 40920161. The reversal of 40920128 is 82102904.

It is a junction number, because it is equal to n+sod(n) for n = 40920097 and 40920106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12428 + ... + 15371.

Almost surely, 2^40920128 is an apocalyptic number.

It is an amenable number.

40920128 is an abundant number, since it is smaller than the sum of its proper divisors (43814272).

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

40920128 is a wasteful number, since it uses less digits than its factorization.

40920128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27834 (or 27824 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 40920128 is about 6396.8842415664. The cubic root of 40920128 is about 344.5976630245.

The spelling of 40920128 in words is "forty million, nine hundred twenty thousand, one hundred twenty-eight".