40325428 has 108 divisors (see below), whose sum is σ = 92001420. Its totient is φ = 15375360.

The previous prime is 40325423. The next prime is 40325431. The reversal of 40325428 is 82452304.

It can be written as a sum of positive squares in 6 ways, for example, as 2108304 + 38217124 = 1452^2 + 6182^2 .

It is a super-2 number, since 2×40325428² = 3252280286766368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40325396 and 40325405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40325423) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1390518 + ... + 1390546.

It is an arithmetic number, because the mean of its divisors is an integer number (851865).

Almost surely, 2^40325428 is an apocalyptic number.

It is an amenable number.

40325428 is an abundant number, since it is smaller than the sum of its proper divisors (51675992).

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

40325428 is a wasteful number, since it uses less digits than its factorization.

40325428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 40325428 is about 6350.2305469959. The cubic root of 40325428 is about 342.9201422262.

The spelling of 40325428 in words is "forty million, three hundred twenty-five thousand, four hundred twenty-eight".