157220622 has 64 divisors (see below), whose sum is σ = 386487360. Its totient is φ = 47060352.

The previous prime is 157220621. The next prime is 157220633. The reversal of 157220622 is 226022751.

157220622 is a `hidden beast` number, since 15 + 7 + 2 + 20 + 622 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157220621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22948 + ... + 29000.

It is an arithmetic number, because the mean of its divisors is an integer number (6038865).

Almost surely, 2^157220622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157220622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193243680).

157220622 is an abundant number, since it is smaller than the sum of its proper divisors (229266738).

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

157220622 is a wasteful number, since it uses less digits than its factorization.

157220622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6114 (or 6108 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 157220622 is about 12538.7647716990. The cubic root of 157220622 is about 539.7216466656.

The spelling of 157220622 in words is "one hundred fifty-seven million, two hundred twenty thousand, six hundred twenty-two".