155742264 has 80 divisors (see below), whose sum is σ = 450352320. Its totient is φ = 50232960.

The previous prime is 155742247. The next prime is 155742271. The reversal of 155742264 is 462247551.

It is a happy number.

155742264 is a `hidden beast` number, since 1 + 5 + 574 + 22 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16212 + ... + 23964.

It is an arithmetic number, because the mean of its divisors is an integer number (5629404).

Almost surely, 2^155742264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155742264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225176160).

155742264 is an abundant number, since it is smaller than the sum of its proper divisors (294610056).

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

155742264 is a wasteful number, since it uses less digits than its factorization.

155742264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7802 (or 7789 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 155742264 is about 12479.6740342046. The cubic root of 155742264 is about 538.0246346104.

The spelling of 155742264 in words is "one hundred fifty-five million, seven hundred forty-two thousand, two hundred sixty-four".