137628426 has 32 divisors (see below), whose sum is σ = 297601920. Its totient is φ = 42179904.

The previous prime is 137628409. The next prime is 137628427. The reversal of 137628426 is 624826731.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (137628427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17160 + ... + 23868.

It is an arithmetic number, because the mean of its divisors is an integer number (9300060).

Almost surely, 2^137628426 is an apocalyptic number.

137628426 is an abundant number, since it is smaller than the sum of its proper divisors (159973494).

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

137628426 is a wasteful number, since it uses less digits than its factorization.

137628426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6990.

The product of its digits is 96768, while the sum is 39.

The square root of 137628426 is about 11731.5142245151. The cubic root of 137628426 is about 516.3007005806.

The spelling of 137628426 in words is "one hundred thirty-seven million, six hundred twenty-eight thousand, four hundred twenty-six".