155240984 has 16 divisors (see below), whose sum is σ = 303732720. Its totient is φ = 74245600.

The previous prime is 155240983. The next prime is 155240993. The reversal of 155240984 is 489042551.

It is a super-2 number, since 2×155240984² = 48199526226576512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155240983) 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, 421667 + ... + 422034.

It is an arithmetic number, because the mean of its divisors is an integer number (18983295).

Almost surely, 2^155240984 is an apocalyptic number.

It is an amenable number.

155240984 is a deficient number, since it is larger than the sum of its proper divisors (148491736).

155240984 is a wasteful number, since it uses less digits than its factorization.

155240984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843730 (or 843726 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 155240984 is about 12459.5739895070. The cubic root of 155240984 is about 537.4467763416.

The spelling of 155240984 in words is "one hundred fifty-five million, two hundred forty thousand, nine hundred eighty-four".