742581630 has 48 divisors (see below), whose sum is σ = 2206530144. Its totient is φ = 169732800.

The previous prime is 742581613. The next prime is 742581643. The reversal of 742581630 is 36185247.

742581630 is a `hidden beast` number, since 7 + 42 + 581 + 6 + 30 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 588721 + ... + 589980.

It is an arithmetic number, because the mean of its divisors is an integer number (45969378).

Almost surely, 2^742581630 is an apocalyptic number.

742581630 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

742581630 is an abundant number, since it is smaller than the sum of its proper divisors (1463948514).

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

742581630 is a wasteful number, since it uses less digits than its factorization.

742581630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178721 (or 1178718 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 742581630 is about 27250.3510069137. The cubic root of 742581630 is about 905.5547934693.

The spelling of 742581630 in words is "seven hundred forty-two million, five hundred eighty-one thousand, six hundred thirty".