32400400394 has 16 divisors (see below), whose sum is σ = 50285664000. Its totient is φ = 15638716464.

The previous prime is 32400400381. The next prime is 32400400399. The reversal of 32400400394 is 49300400423.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (32400400399) 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, 288707 + ... + 384905.

It is an arithmetic number, because the mean of its divisors is an integer number (3142854000).

Almost surely, 2^32400400394 is an apocalyptic number.

32400400394 is a deficient number, since it is larger than the sum of its proper divisors (17885263606).

32400400394 is a wasteful number, since it uses less digits than its factorization.

32400400394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102037.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 32400400394 its sum of digits (29), we get a palindrome (32400400423).

The spelling of 32400400394 in words is "thirty-two billion, four hundred million, four hundred thousand, three hundred ninety-four".