20374340 has 24 divisors (see below), whose sum is σ = 48898752. Its totient is φ = 6985440.

The previous prime is 20374339. The next prime is 20374351. The reversal of 20374340 is 4347302.

It is a happy number.

It is a super-2 number, since 2×20374340² = 830227460871200, 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, 72626 + ... + 72905.

It is an arithmetic number, because the mean of its divisors is an integer number (2037448).

Almost surely, 2^20374340 is an apocalyptic number.

20374340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20374340 is an abundant number, since it is smaller than the sum of its proper divisors (28524412).

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

20374340 is a wasteful number, since it uses less digits than its factorization.

20374340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145547 (or 145545 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 20374340 is about 4513.7944126865. The cubic root of 20374340 is about 273.1248294225.

The spelling of 20374340 in words is "twenty million, three hundred seventy-four thousand, three hundred forty".