151623730 has 16 divisors (see below), whose sum is σ = 273291480. Its totient is φ = 60567552.

The previous prime is 151623727. The next prime is 151623757. The reversal of 151623730 is 37326151.

It can be written as a sum of positive squares in 4 ways, for example, as 75881521 + 75742209 = 8711^2 + 8703^2 .

It is a super-2 number, since 2×151623730² = 45979510998225800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2169 + ... + 17548.

Almost surely, 2^151623730 is an apocalyptic number.

151623730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

151623730 is a deficient number, since it is larger than the sum of its proper divisors (121667750).

151623730 is a wasteful number, since it uses less digits than its factorization.

151623730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20493.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 151623730 is about 12313.5587869633. The cubic root of 151623730 is about 533.2395976758.

Adding to 151623730 its reverse (37326151), we get a palindrome (188949881).

The spelling of 151623730 in words is "one hundred fifty-one million, six hundred twenty-three thousand, seven hundred thirty".