402634146 has 8 divisors (see below), whose sum is σ = 805268304. Its totient is φ = 134211380.

The previous prime is 402634097. The next prime is 402634147. The reversal of 402634146 is 641436204.

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

402634146 is an admirable number.

It is a super-2 number, since 2×402634146² = 324228511050298632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402634147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33552840 + ... + 33552851.

It is an arithmetic number, because the mean of its divisors is an integer number (100658538).

Almost surely, 2^402634146 is an apocalyptic number.

402634146 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.

402634146 is a wasteful number, since it uses less digits than its factorization.

402634146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67105696.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 402634146 is about 20065.7455879417. The cubic root of 402634146 is about 738.4201417883.

The spelling of 402634146 in words is "four hundred two million, six hundred thirty-four thousand, one hundred forty-six".