40251924 has 48 divisors (see below), whose sum is σ = 106142400. Its totient is φ = 13187808.

The previous prime is 40251907. The next prime is 40251931. The reversal of 40251924 is 42915204.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3214 + ... + 9530.

It is an arithmetic number, because the mean of its divisors is an integer number (2211300).

Almost surely, 2^40251924 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40251924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53071200).

40251924 is an abundant number, since it is smaller than the sum of its proper divisors (65890476).

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

40251924 is a wasteful number, since it uses less digits than its factorization.

40251924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6389 (or 6381 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 40251924 is about 6344.4404008549. The cubic root of 40251924 is about 342.7116605987.

It can be divided in two parts, 402 and 51924, that added together give a triangular number (52326 = T₃₂₃).

The spelling of 40251924 in words is "forty million, two hundred fifty-one thousand, nine hundred twenty-four".