155402814 has 144 divisors (see below), whose sum is σ = 403176960. Its totient is φ = 39755520.

The previous prime is 155402801. The next prime is 155402857. The reversal of 155402814 is 418204551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2633917 + ... + 2633975.

It is an arithmetic number, because the mean of its divisors is an integer number (2799840).

Almost surely, 2^155402814 is an apocalyptic number.

155402814 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 155402814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201588480).

155402814 is an abundant number, since it is smaller than the sum of its proper divisors (247774146).

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

155402814 is a wasteful number, since it uses less digits than its factorization.

155402814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 155402814 is about 12466.0665007050. The cubic root of 155402814 is about 537.6334641712.

The spelling of 155402814 in words is "one hundred fifty-five million, four hundred two thousand, eight hundred fourteen".