400428654 has 8 divisors (see below), whose sum is σ = 800857320. Its totient is φ = 133476216.

The previous prime is 400428641. The next prime is 400428697. The reversal of 400428654 is 456824004.

It is a sphenic number, since it is the product of 3 distinct primes.

400428654 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33369049 + ... + 33369060.

It is an arithmetic number, because the mean of its divisors is an integer number (100107165).

Almost surely, 2^400428654 is an apocalyptic number.

400428654 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

400428654 is a wasteful number, since it uses less digits than its factorization.

400428654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66738114.

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 400428654 is about 20010.7134805334. The cubic root of 400428654 is about 737.0694015737.

The spelling of 400428654 in words is "four hundred million, four hundred twenty-eight thousand, six hundred fifty-four".