40292816 has 10 divisors (see below), whose sum is σ = 78067362. Its totient is φ = 20146400.

The previous prime is 40292807. The next prime is 40292821. The reversal of 40292816 is 61829204.

It can be written as a sum of positive squares in only one way, i.e., 29376400 + 10916416 = 5420^2 + 3304^2 .

It is a super-2 number, since 2×40292816² = 3247022042419712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1259135 + ... + 1259166.

Almost surely, 2^40292816 is an apocalyptic number.

It is an amenable number.

40292816 is a deficient number, since it is larger than the sum of its proper divisors (37774546).

40292816 is a wasteful number, since it uses less digits than its factorization.

40292816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518309 (or 2518303 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 40292816 is about 6347.6622468433. The cubic root of 40292816 is about 342.8276751129.

The spelling of 40292816 in words is "forty million, two hundred ninety-two thousand, eight hundred sixteen".