155486740 has 24 divisors (see below), whose sum is σ = 329696640. Its totient is φ = 61590048.

The previous prime is 155486711. The next prime is 155486741. The reversal of 155486740 is 47684551.

It is a super-2 number, since 2×155486740² = 48352252631655200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155486693 and 155486702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155486741) 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, 35680 + ... + 39799.

It is an arithmetic number, because the mean of its divisors is an integer number (13737360).

Almost surely, 2^155486740 is an apocalyptic number.

155486740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155486740 is an abundant number, since it is smaller than the sum of its proper divisors (174209900).

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

155486740 is a wasteful number, since it uses less digits than its factorization.

155486740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75591 (or 75589 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 155486740 is about 12469.4322244439. The cubic root of 155486740 is about 537.7302305569.

The spelling of 155486740 in words is "one hundred fifty-five million, four hundred eighty-six thousand, seven hundred forty".