400036546 has 16 divisors (see below), whose sum is σ = 738529344. Its totient is φ = 158256144.

The previous prime is 400036523. The next prime is 400036547. The reversal of 400036546 is 645630004.

It is a super-2 number, since 2×400036546² = 320058476271220232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (400036547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1098820 + ... + 1099183.

It is an arithmetic number, because the mean of its divisors is an integer number (46158084).

Almost surely, 2^400036546 is an apocalyptic number.

400036546 is a deficient number, since it is larger than the sum of its proper divisors (338492798).

400036546 is a wasteful number, since it uses less digits than its factorization.

400036546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2198025.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 400036546 is about 20000.9136291320. The cubic root of 400036546 is about 736.8287384806.

The spelling of 400036546 in words is "four hundred million, thirty-six thousand, five hundred forty-six".