672269780 has 96 divisors (see below), whose sum is σ = 1829103360. Its totient is φ = 201553920.

The previous prime is 672269771. The next prime is 672269803. The reversal of 672269780 is 87962276.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24860 + ... + 44300.

It is an arithmetic number, because the mean of its divisors is an integer number (19053160).

Almost surely, 2^672269780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672269780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (914551680).

672269780 is an abundant number, since it is smaller than the sum of its proper divisors (1156833580).

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

672269780 is a wasteful number, since it uses less digits than its factorization.

672269780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19489 (or 19487 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 672269780 is about 25928.1657662088. The cubic root of 672269780 is about 876.0210252593.

The spelling of 672269780 in words is "six hundred seventy-two million, two hundred sixty-nine thousand, seven hundred eighty".