400036764 has 24 divisors (see below), whose sum is σ = 934053120. Its totient is φ = 133255024.

The previous prime is 400036757. The next prime is 400036771. The reversal of 400036764 is 467630004.

It is an interprime number because it is at equal distance from previous prime (400036757) and next prime (400036771).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8467 + ... + 29525.

It is an arithmetic number, because the mean of its divisors is an integer number (38918880).

Almost surely, 2^400036764 is an apocalyptic number.

It is an amenable number.

400036764 is an abundant number, since it is smaller than the sum of its proper divisors (534016356).

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

400036764 is a wasteful number, since it uses less digits than its factorization.

400036764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22649 (or 22647 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 400036764 is about 20000.9190788824. The cubic root of 400036764 is about 736.8288723255.

Adding to 400036764 its reverse (467630004), we get a palindrome (867666768).

The spelling of 400036764 in words is "four hundred million, thirty-six thousand, seven hundred sixty-four".