40019356 has 24 divisors (see below), whose sum is σ = 78702624. Its totient is φ = 17666880.

The previous prime is 40019341. The next prime is 40019359. The reversal of 40019356 is 65391004.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40019359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15535 + ... + 17926.

It is an arithmetic number, because the mean of its divisors is an integer number (3279276).

Almost surely, 2^40019356 is an apocalyptic number.

40019356 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

40019356 is a deficient number, since it is larger than the sum of its proper divisors (38683268).

40019356 is a wasteful number, since it uses less digits than its factorization.

40019356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33501 (or 33499 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 40019356 is about 6326.0853614222. The cubic root of 40019356 is about 342.0503442638.

The spelling of 40019356 in words is "forty million, nineteen thousand, three hundred fifty-six".