402154320 has 160 divisors (see below), whose sum is σ = 1298202624. Its totient is φ = 102873600.

The previous prime is 402154303. The next prime is 402154327. The reversal of 402154320 is 23451204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402154327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1420899 + ... + 1421181.

Almost surely, 2^402154320 is an apocalyptic number.

402154320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402154320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (649101312).

402154320 is an abundant number, since it is smaller than the sum of its proper divisors (896048304).

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

402154320 is a wasteful number, since it uses less digits than its factorization.

402154320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 402154320 is about 20053.7856775223. The cubic root of 402154320 is about 738.1266958840.

The spelling of 402154320 in words is "four hundred two million, one hundred fifty-four thousand, three hundred twenty".