155214380 has 24 divisors (see below), whose sum is σ = 337191120. Its totient is φ = 59944640.

The previous prime is 155214377. The next prime is 155214383. The reversal of 155214380 is 83412551.

It is an interprime number because it is at equal distance from previous prime (155214377) and next prime (155214383).

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 (155214383) 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, 133226 + ... + 134385.

It is an arithmetic number, because the mean of its divisors is an integer number (14049630).

Almost surely, 2^155214380 is an apocalyptic number.

155214380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155214380 is an abundant number, since it is smaller than the sum of its proper divisors (181976740).

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

155214380 is a wasteful number, since it uses less digits than its factorization.

155214380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267649 (or 267647 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 155214380 is about 12458.5063310174. The cubic root of 155214380 is about 537.4160734294.

The spelling of 155214380 in words is "one hundred fifty-five million, two hundred fourteen thousand, three hundred eighty".